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Finding the Fourth Proportional to 621,818.70, 932,728.05 and 201,137.10

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Solution

The fourth proportional to 621,818.70, 932,728.05 and 201,137.10 is: 301,705.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,818.70 : 932,728.05 = 201,137.10 : x
  2. Step 2: Convert to fraction form
    621,818.70/932,728.05 = 201,137.10/x
  3. Step 3: Cross multiply
    621,818.70x = 932,728.05 × 201,137.10
  4. Step 4: Simplify right side
    621,818.70x = 187,606,215,065.66
  5. Step 5: Solve for x
    x = 187,606,215,065.66/621,818.70
  6. Step 6: Final answer
    x = 301,705.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.